Nanofiltration Composition Membrane Having Improved Acid and Heat Resistance And Manufacturing Method Thereof

The present invention relates to a nanofiltration membrane with improved acid resistance and heat resistance, which includes a porous support and is formed by performing interfacial polymerization on an amine aqueous solution including linear alphatic diamine represented by chemical formula 1, acid halogen compound, and an organic solution including diisocyanate on the surface of the porous support. In the chemical formula 1, n is a natural number of 1 to 6 (ethylenediamine, 1, 3-diaminopropane, 1, 4-diaminobutane, 1, 6-hexanediamine, 1, 5-diaminopentane). 본 발명은 다공성 지지체; 및상기 다공성 지지체 표면에 하기 화학식 1의 선형 지방족 다이아민(linear aliphatic diamine)을 포함하는 아민수용액과 산할로겐 화합물 및 다이이소시아네이트(diisocyanate)를 포함하는 유기용액을 계면중합하여 형성된 내산성 및 내열성이 향상된 나노분리막에 관한 것이다. [화학식1]여기서, n은 1~6의 자연수수(에틸렌다이아민(ethylenediamine), 다이아미노프로펜(1,3-diaminopropane), 다이아미노부탄(1,4-diaminobutane), 헥센다이아민(1,6-hexanediamine), 다이아미노펜탄(1,5-diaminopentane))